2110211021221 has 16 divisors (see below), whose sum is σ = 2230181208000. Its totient is φ = 1991147332608.

The previous prime is 2110211021201. The next prime is 2110211021249. The reversal of 2110211021221 is 1221201120112.

It is not a de Polignac number, because 2110211021221 - 2¹¹ = 2110211019173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2110211021195 and 2110211021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2110211021201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4583275 + ... + 5022631.

It is an arithmetic number, because the mean of its divisors is an integer number (139386325500).

Almost surely, 2^{2110211021221} is an apocalyptic number.

It is an amenable number.

2110211021221 is a deficient number, since it is larger than the sum of its proper divisors (119970186779).

2110211021221 is a wasteful number, since it uses less digits than its factorization.

2110211021221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440388.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2110211021221 its reverse (1221201120112), we get a palindrome (3331412141333).

The spelling of 2110211021221 in words is "two trillion, one hundred ten billion, two hundred eleven million, twenty-one thousand, two hundred twenty-one".